var highNum=1; //1 + highest number of images (if 4 returns 0-3)
var randomNum;
randomNum = Math.round(Math.random() * highNum-1);

function drawImage()

{

	var imageName;
	var linkString;

	if (randomNum < 0)
		randomNum=0;

	hght = "268";
	wdth = "400";
	switch (randomNum)
	{
		case 0: linkString = "a.html"; imageName = "CEImage.jpg"; break;
	}

	document.write('<img src="images/' + 
	 imageName + '" height="'+hght +'" width="'+wdth+'" border="1">');

}

function writeText()

{

	var imageText;
	if (randomNum < 0)
		randomNum=0;

	switch (randomNum)
	{
		case 0: imageText = "Description of the image"; break;
	}

	document.write(imageText);

}